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ESPN collates all of the key dates you need for your diary ahead of the upcoming 2018 F1 season.

The new Sauber, known as the C37, will be the first launched under Alfa Romeo's title sponsor deal, which will see the car decked out in a new livery for 2018. A concept livery was unveiled when the Alfa Romeo deal was announced in December (pictured), but the final design is expected to change ahead of the launch of the new car next month.

After spending all of the 2017 season using year-old engines, Sauber will upgrade to an up-to-date Ferrari power unit for the start of 2018. New race driver Charles Leclerc is expecting the new engine deal to provide Sauber with a significant step in performance after the team finished last year's constructors' championship in last place with just five points.

Leclerc will be partnered by Marcus Ericsson at Sauber this year, who is embarking on his fourth season with the team.